Chimney, ventilator, and the like.



T. PATTISON.

CHIMNEY, VENTILATOR, AND THE LIKE.

APPLICATION TILED 00T.14, 1912.

Patented Sept. 2, 1913.

2 SHBETBSHEET 1.

lliyci.

WITNESSES caLuMulA PLANOGRAPII c0. wASmNu'roN, 1). c7

T. PATTISON. CHIMNEY, VENTILATOR, AND THE LIKE.

APPLICATION TILED 00114, 1912.

1,071,951. Patented Sept. 2, 1913.

2 SHEBTSSHEET 2.

WITNESSES INVENTOR l A,. ATTORNEY COLUMBIA PLANOURAPM C0,, WASHINGTON, n. C

NTTE UFFIGE.

THOMAS PATIISON, OF SUNNYVALE, CALIFORNIA.

CHIll/INEY, VENTILATOR, AND THE LIKE.

Application filed October 14, 1912.

To 01/] 007mm 171' may concern.

lie it. kncwn that I, TuoMAs livnrisox, a citizen of the United States, residing at tii'inuyvale, in the county oat Santa Clara and State of California, have invented new and useful Improvements in Chimneys, Ventilators, and the Like, of which the following is a specification.

The present invention relates to improvements in chimney tops, 'entilators and similar contrivanecs, where a current of smoke, gas, or air, is desired to be carried upward and dis-charged in the outside atmosphere.

The objects of the improvement are to utilize the force of the wind for aiding this upward current and to prevent a downward current within the device due to excessive or irregular wind pressure in the outside atmosphere.

In the accompanying drawing, Figure l is a side view partly in vertical section of my improved device; Fig. 2 is a cross-section thereof on the lines 22 of Fig. 1; Fig. 3 is an enlarged broken detail view of the device; Fig. 4 is a detail cross-sectional view on the line 44 of Fig. 1; Fig. 5 is a view similar to Fig. 1 of a modified form of this device; Fig. 6 is a cross section on the line 66 of Fig.

Referring to the drawing, 1 indicates a tube, which is adapted to surround the upper end of a flue or ventilating device. To the upper end of this tube 1 is riveted, as shown at 2, the lowermost of a vertical series of inner tubes 3. The lower end of said lowermost tube 3 is formed with an outwardly extending flange 4, the outer edge of which, as shown at 5, is bent around the outer flanged end of an outer tube 6. This outer tube 6 extends the :full height of, and beyond, the vertical series of inner tubes 3. Each tube 3 except the lowermost is, at its lowest end, swag-ed obliquely or conically outward, as shown at 7, and then extended cylindrically downward, said downwardly extending portion 8 being riveted to the outer tube (3. Said inner and outer tubes thus form a vertical series of annular wind chambers 9, each closed at the bottom by the portion 1 0r 7 of the inner tube opening at the top into the flue or ventilator by a circular passage between the upper edge of one inner tube, and the oblique portion 7 of the inner tube next above it.

The outer tube is formed with a vertical series of rings of wind inlets 11, each inlet Specification of Letters Patent.

Patented Sept. 2,1913.

Serial No. 725,640.

being Formed by cutting a. vertical slit in the outer tube and then pressing the metal of said tube outward on one side of said slit. The passages through said wind inlets are all there-tore tangential to the flue or ventilator and those of each ring are all directed in the same angular direction around the line, but the angular directions oi. these passages alternate in successive rings. lt results that the wind wl'iatcver be its direction. will, on impinging upon said lluc pass through one-hall" of these wind inlets more or less fully according to the direction of said inlets relative to the direction of the wind. On entering the annular chambers 9 between the inner and outer tubes, the wind will impinge upon deflectors 12, which, as clearly shown in Figs. 3 and 4-, are formed by crimping outwardly the inner tube. Ilach deflector slopes upwardly away from the adjacent air inlet through which the wind passes to impinge upon said deflector. The result is that the tangential direction of the wind is, by said deflectors, converted into an upward direction, and there results a strong upward cur rent of air in the interior of the line, which current assists the natural ventilation of the ventilator or draft of the flue. The upper portion of the outer tube, at the top of the uppermost inner tube, converges inwardly as shown at 13, to form an inwardly extending passage for the uppermost annular wind chamber 9, similar to those for the lower chambers, and then diverges or expands outwardly again, to providi an cnlargcd upper passage for the upwardly directed gases and atmospheric air. Near its top the outer tube is formed with an outwardly extending head 14. Surrounding the upper end of the tube 6 is a short cylinder 16 bent outwardly, to which are secured bent portions 17 of 'ertu ally extending strips 18, the upper ends of which are bent outward and secured to the under side of a disk-shaped or conical cover 19, from the upper side of which, near the circumfercnce, extend strips 21, which are secured to the inner sides Of the lower portion of an inner protector 22, conical in form. To said strips 18 are secured vertical radially extending plates 23, the outer portions of which plates are flanged, as shown at 24, and secured to an outer protector 25. The protector 25 comprises a mediate cylindrical portion, and upper and lower converging portions 26, 27, which are crimped inward to assume a general conical form. It will readily be seen that, by this construction, rain and violent winds are absolutely prevented from descending the flue or ventilator.

In the modification shown in Figs. 5 and G, the lowermost tubes 1 and the inner and outer tubes are square in cross section. The lower portions of the inner tube, in like manner, as in the form of the invention first described, are formed with oblique downwardly and outwardly directed portions 7 and with portions 8 secured to the outer tube, but the upper portion of said inner tube is inclined slightly outward upwardly, except the extreme upper portion, which is inclined inward upwardly. Each side of the outer tube 31 is formed with a vertical series of horizontal. slots or passages 32, and the metal of the tube is, along each horizontal edge of said slot, bent back on itself at an acute angle, said bent back portions forming guides between the slots to receive deflectors 83. Each deflector 33 has a horizontal raised central portion and upper and lower sides sloping from said raised portion inwardly, or toward the flue. It Will be evident, that the wind upon striking a side of said flue or ventilator, and especially the upper sloping portion of one of the deflectors 33, will be directed upwardly into the annular space between the inner and outer flue, and thus will, upon finding its way into the passage of the flue or ventilator, be given an upward direction, thus aiding in the ventilation of the ventilator or in the draft of the fine. The device for preventing a back draft and entrance of rain is, in this modification, similar to that in the first form of the invention except that, there being no conical surfaces, but only plane surfaces, no crimping of the metal is required. In both cases, the top of the outer protector is about on a level with the middle of the inner protector, and the bottom of the outer protector is below the top of the fine. The cover is spaced considerably above the top of the flue, and the inner protector extends below the bottom of the cover.

It will be seen that by the above invention I provide a device which fulfils all the requirements of a satisfactory flue or ventilator, slnce 1t utllizes the force of the Wmd to assist the upward current of the gases or air, and absolutely prevents down draft and the passage of rain thereinto.

I claim:

1. In a flue or ventilator, the combination of an outer tube, and a vertical series of inner tubes, each inner tube being secured near its lower edge to the outer tube, and extending inwardly and then upwardly above said lower edge to form with the outer tube an annular chamber, the upper edge of said inner tube being spaced from a lower portion of the next higher inner tube to form a passage to admit external air into the flue, the outer chamber being formed with openings leading to the lower portions of the spaces between the inner and outer tube.

2. In a flue or ventilator, the combination with a tube of an outer protector, surrounding the tube and spaced therefrom, and the lower edge of which extends a considerable depth below the top of said tube, an upwardly conveying inner protector within the outer protector of which the top projects above, and the lower edge extends below, the top of the outer protector, and an upwardly convex cover above the tube and spaced therefrom, within the inner protector, but spaced therefrom, and means for supporting the cover, inner, and outer protectors upon the tube in their above-described position.

3. In a flue or ventilator, in combination with a tube, a cylinder surrounding the up per edge of said tube, vertical radially extending plates secured to said cylinder, a cover secured to and above said plates, an upwardly converging inner protector secured to and supported by said cover and spaced therefrom, and an outer protector In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses. V

THOMAS PATTISON.

Witnesses:

F. M. WRIGHT, D. B. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

